To get an idea of exactly how small the worldâs smallest insect is, take out a ruler and look at those tiny lines that appear in between centimeters (make sure youâre not on the side that measures in inches). If in doubt, ask a grown-up to help you find the millimeters.
Nausea and vomiting are very nonspecific symptoms that can be common among people with stomach cancer. Persistent nausea and/or vomiting needs to be checked by your doctor. It can indicate a serious health problem and can cause damage to the lining of your esophagus.
Diarrhea caused by a viral infection, such as a stomach virus, or bacterial infection also may cause vomiting. In addition, blood and mucus in the stools may appear with diarrhea caused by bacterial infections. Reviewed by health care specialists at UCSF Medical Center.